WO2015108405A1 - Method for the anti-corrosion protection of flanged couplings - Google Patents

Method for the anti-corrosion protection of flanged couplings Download PDF

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Publication number
WO2015108405A1
WO2015108405A1 PCT/MX2014/000191 MX2014000191W WO2015108405A1 WO 2015108405 A1 WO2015108405 A1 WO 2015108405A1 MX 2014000191 W MX2014000191 W MX 2014000191W WO 2015108405 A1 WO2015108405 A1 WO 2015108405A1
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WO
WIPO (PCT)
Prior art keywords
flanged joint
zinc
microcrystalline
groove
wax
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PCT/MX2014/000191
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Spanish (es)
French (fr)
Inventor
David NUÑEZ CARDENAS
Original Assignee
Nuñez Cardenas David
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Publication date
Application filed by Nuñez Cardenas David filed Critical Nuñez Cardenas David
Publication of WO2015108405A1 publication Critical patent/WO2015108405A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/08—Coatings characterised by the materials used by metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
    • F16L58/187—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for flanged joints

Definitions

  • This invention corresponds in its essence to the field of chemical engineering, with galvanic protection and corrosion inhibition being the most important matters, since the main processes of operation of the system have to do with the electrochemical mechanism of metals, in this case , zinc as a sacrificial anode, carbon steel as a cathode and humidity of the environment as an electrolyte. Both metals and the humidity of the environment interact in a very intimate way depending on their physicochemical properties to form a galvanic cell in which the free electrons of zinc or anodic zone circulate through the metal mass accumulating in the steel or cathodic zone. No less important is the additional mixture of other corrosion inhibitor components that are used as a whole and configure a very efficient system for the corrosion protection of flanged joints.
  • the pipes transport and distribute products more economically and in large quantities worldwide.
  • the most used energy in the world are crude oil, natural gas, liquefied petroleum gas (LP gas) and gasoline that are transported and distributed in pipelines through underground pipelines, which operate without interruption 24 hours a day. day, 365 days a year. Thanks to these transport systems, it is possible to access these energy sources safely and economically. Given the importance of this means of transport, the use of flanged joints in carbon steel pipe circuits represents a very important part of this transport system.
  • Flanged carbon steel joints are mechanical elements used in liquid or gas transportation systems through pipeline circuits.
  • the advantage offered by the use of flanged joints lies in the fact that because they are joined by studs and clamping nuts, they allow a quick assembly and disassembly of the elements that make up the pipe circuits in order to carry out repairs or maintenance work.
  • our goal is to contribute to the solution to solve corrosion problems in flanged joints to reduce operation and maintenance costs and at the same time increase the safety conditions of aerial pipeline transportation systems.
  • Stainless Steel Belts or Protective Bands Kleerband flange Protectors that are belts or bands of corrosion-inhibiting vinyl
  • Enviropeel System which is a Thermoplastic corrosion inhibitor wrap
  • Petrolatum Tapes which are fabrics impregnated with saturated oil and inert siliceous fillers
  • Microcrystalline oil wax Radolid Protection Caps that are high density polyethylene plugs corrosion inhibitors for the external protection of nuts and studs etc.
  • Flanged joints need to protect against corrosion the following basic components: The gaskets or seals of the flanged joint, their inner faces, their front faces, their side faces, studs and clamping nuts.
  • This invention relates to a method for integral anticorrosive protection of flanged joints operating at temperatures from -50 ° C to + 80 ° C continuously and that can be guaranteed for at least 30 years without corrosion problems.
  • This system fully encapsulates flanged joints since no interior or exterior surface is left unprotected.
  • four basic materials are needed:
  • an electro-conductive acrylic adhesive of a uniform thickness of 0.025 mm., Which can withstand temperatures from -50 ° C to + 130 ° C, and the temperature for its application is from + 8 ° C to + 40 ° C.
  • the metal surface must be cleaned before obtaining a white metal cleaning grade.
  • the adhesive is called Electroconductive because it is provided with small zinc particles of homogeneous size and shape, dispersed uniformly over the acrylic base, these particles ensure an electrical conductivity to the adhesive and a metallic continuity between zinc and steel, such so that if this coating is damaged somewhere, an electrolyte will be filtered in the damaged place through the atmosphere, then, between the metallic surfaces a galvanic cell will be verified, in which the zinc will assume the function of anode, dissolving and protecting the metal surface or cathode of the battery (Fe). (Galvanic protection by cold rolling).
  • each piece of paper is removed from its release agent just before putting it in contact with the metal surface and applied by aligning it to the front faces of the flanged joint, ensuring its adhesion with a wooden spatula.
  • these rectangular zinc pieces must always be applied from the bottom of the flanged joint to the top with a minimum overlap of 1.5 cm on each side, and the number of pieces necessary to cover the entire perimeter must be applied of the flanged joint.
  • a cut of approximately 1.5 x 1.5 cm is made in the groove of the flanged joint to carry subsequently, the internal protection of it.
  • the metallic surfaces must be cleaned before obtaining a degree of cleanliness to white metal.
  • microcrystalline oil wax that is a corrosion inhibitor, anti-flame, repellent to water and has great adhesion to metal surfaces. It can work continuously at temperatures from -50 ° C to 80 ° C. It is supplied in blocks in solid state and for its application it must be heated to 86 ° C to handle it and apply it in liquid state. After applying it solidifies almost instantaneously upon contact with the metal. The metal surface must be cleaned before obtaining a white metal cleaning grade.
  • an electric generator of approximately 4 kw is used, a circular electrical resistance of approximately 3 kw with integrated thermostat, and a metal bucket, where microcrystalline wax blocks are previously emptied cut of approximately 10 x10 x 10 cms.
  • the circular resistance is attached as a belt to the metal bucket and is connected to the electric generator where after a certain time, the microcrystalline wax will pass from the solid state to the liquid state to a temperature of 86 ° C, then the internal groove of each flanged joint is filled either vertically or horizontally.
  • a metal funnel is placed in the groove made in the zinc tape on the top of the flanged joint, with the help of a 1 It metal bowl, the wax is taken liquid microcrystalline from the cuvette and the flanged joint is carefully emptied through the funnel, this operation is repeated until the groove is completely filled, done with a cloth dampened with thinner, the spilled paraffin is cleaned and with the help of a pair of scissors, a special piece of zinc of square shape of approximately 5 x 5 cm is cut, its release paper is removed just before putting it in contact with the metal surface, and it is placed on the existing groove, ensuring its adhesion with the help of a rubber hammer.
  • spiked tapes with a cloth moistened with thinner, the spilled paraffin is cleaned and with the help of scissors, 4 square pieces of zinc of approximately 5 x 5 cm are cut, Remove the release paper just before putting them in contact with the metal surface, cover the groove and the 3 existing perforations and ensure their adhesion with the help of a rubber hammer. With these applications all inner surfaces of the flanged joint are fully protected with the exception of studs and clamping nuts.
  • microcrystalline oil wax is also used for the external protection of external studs and clamping nuts. With the help of a 2 "brush, the liquid microcrystalline wax is taken from the cuvette and carefully applied to each nut and clamping stud of the flanged joint until it is completely covered. The microcrystalline wax will instantly solidify upon contact with the metal surface.
  • Fig. 1 Side view with the detail of the components of the anticorrosive zinc tape.
  • Fig. 2 Front and side views with the detail of the protection of the lateral faces of the flanged joints with zinc tape.
  • FIG. 3 Front view with the detail of the protection of the front faces of the flanged joints with zinc tape.
  • Fig. 4 Side view with the detail of the protection of the electroconductive adhesive of the zinc tape with a seal for fast drying weathering in the circular cuts of the special zinc pieces of zinc tape.
  • Fig. 5 Front view of the equipment with the detail of the heating of the microcrystalline oil wax.
  • FIG. 6 Front view with the detail of filling with microcrystalline oil wax in a vertical flanged joint.
  • Fig. 7 Front view with the detail of filling with microcrystalline oil wax in a horizontal flanged joint.
  • Fig. 8 Front view with the detail of the protection with microcrystalline wax from asparagus oil and fastening nuts of the flanged joints.
  • Fig. 9 Front view of the configuration of high density polyethylene seals.
  • FIG. 10 Front view of the placement of polyethylene seals in flanged joints. DETAILED DESCRIPTION OF THE INVENTION
  • the invention is supported by a high purity anticorrosive zinc strip (1) (99.90% zinc by weight) with a uniform thickness of 0.080 mm. It is provided with an electro-conductive adhesive (2), of an acrylic type of a uniform thickness of 0.025 mm., Which can withstand temperatures from -50 ° C to + 130 ° C, the temperature for its application is + 8 ° C at + 40 ° C, and a silicone release paper (3) of uniform thickness of .08 mm thick.
  • At least one cutter (18) make a cut of approximately 1.5 x 1.5 cm in the groove (19) of the top of at least one vertical flanged joint (5) and on either side of the groove (19) in at least one horizontal flanged joint (36) to subsequently carry out the internal corrosion protection thereof.
  • the invention is also supported by a transparent seal (20) for rapid drying against weathering.
  • Electroconductive adhesive (2) For the protection of the Electroconductive adhesive (2) against weathering, the following operations must be carried out: with the help of at least a 2 "brush (21) apply at least one liquid seal against weathering (20) for quick drying in at least one circular cut (9) of at least one special piece of zinc (7) of at least one side face (4) of at least one vertical flanged joint (5) or at least one horizontal flanged joint (36).
  • the invention is also supported by a solid-state microcrystalline petroleum wax (22), which is a brown-colored corrosion inhibitor with a specific gravity at 25 ° C of 0.88 to 0.94, with a minimum flash point of 176 ° C, with a melting point of 71 ° C to 80 ° C, with a penetration of water at 25 ° C from 26 to 50, and with a dielectric strength of 100 volts / mil.
  • a solid-state microcrystalline petroleum wax 22
  • a solid-state microcrystalline petroleum wax which is a brown-colored corrosion inhibitor with a specific gravity at 25 ° C of 0.88 to 0.94, with a minimum flash point of 176 ° C, with a melting point of 71 ° C to 80 ° C, with a penetration of water at 25 ° C from 26 to 50, and with a dielectric strength of 100 volts / mil.
  • At least one liquid microcrystalline wax (31) must partially fill at least 3 straws f lexibles (39), which indicate that at least one slot (19) is completely filled with at least one liquid microcrystalline wax (31), remove at least 3 flexible straws (39) and at least 3 tapes hoisted (37), with at least one cloth (32) moistened with at least one thinner (33), clean at least one spilled liquid microcrystalline wax (31) and with the help of at least scissors (7 ), cut at least 4 square pieces of zinc (34) of approximately 5 x 5 cm, remove at least one release paper (3) just before putting them in contact with the metal surface, cover at least one slot (19 ) and at least the 3 existing perforations and ensure their adhesion with the help of at least one rubber hammer (35).
  • the studs (41) and clamping nuts (10) must perform the following operations: With the help of a 2 "brush (21), take at least one liquid microcrystalline wax (31) in order to at least one metal bowl (27) and carefully apply it in at least asparagus (41) and at least one clamping nut (10) of at least one vertical flanged joint (5), or at least one horizontal flanged joint (36) until completely covered. ,
  • Liquid microcrystalline (31) will instantly solidify upon contact with the metal surface. With at least one cloth (32) moistened with at least one thinner (33), clean at least one spilled liquid microcrystalline wax (31).
  • the invention is also supported by high density polyethylene seals (42), which fulfill two basic functions, one as corrosion inhibitors and the other as mechanical protection and exposure to sunlight from microcrystalline oil wax (31) .
  • Its configuration allows it to encapsulate both the stud (41) and the clamping nut (10), and is designed to operate continuously at temperatures up to 120 ° C, its largest diameter (43) is configured with 6 triangular veins (44 ), which center the seal (42) on the hexagon faces of the nuts (10) and have an angle of inclination that allows them to adjust to the size of each nut (10) so that they are assembled under pressure.

Abstract

The system is a method for protecting at least one vertical flanged coupling (5) or at least one horizontal flanged coupling (36) against external corrosion in surface installations, which can operate continuously with temperatures up to 80°C, said method comprising the steps of: applying at least one anti-corrosion zinc tape (1, 2, 3) on at least one side face (4) and at least one front face (15) of at least one vertical flanged coupling (5) and at least one horizontal flanged coupling (36); and applying at least one transparent seal (20) against weather conditions and the penetration of external agents on at least one electroconductive adhesive (2) of at least one circular cut-out (9) in at least one special zinc part (7); and applying at least one microcrystalline petroleum wax (22) on at least one groove (19) and on at least one securing stud (41) and on at least one securing nut (10) of at least one vertical flanged coupling (5) and at least one horizontal flanged coupling (36); and applying a seal of high-density polyethylene (42) on at least one securing stud (41) and on at least one securing nut (10) of at least one vertical flanged coupling (5) and at least one horizontal flanged coupling (36).

Description

METODO DE PROTECCION ANTICORROSIVA PARA UNIONES BRIDADAS  ANTI-CORROSIVE PROTECTION METHOD FOR FLANGE UNIONS
CAMPO DE LA INVENCION FIELD OF THE INVENTION
Esta invención corresponde en su esencia al campo de la ingeniería química, siendo la protección galvánica y la inhibición de corrosión las materias más destacadas, ya que los procesos principales de operación del sistema tienen que ver con el mecanismo electroquímico de los metales, en este caso, el zinc como ánodo de sacrificio, el acero al carbón como cátodo y la humedad del medio ambiente como electrolito. Ambos metales y la humedad del medio ambiente interactúan de una manera muy íntima en función de sus propiedades fisicoquímicas para formar una pila galvánica en la cual los electrones libres del zinc o zona anódica circulan por la masa metálica acumulándose en el acero o zona catódica. No menos importante es la mezcla adicional de otros componentes inhibidores de corrosión que utilizados en su conjunto configuran un sistema muy eficiente para la protección anticorrosiva de las uniones bridadas.  This invention corresponds in its essence to the field of chemical engineering, with galvanic protection and corrosion inhibition being the most important matters, since the main processes of operation of the system have to do with the electrochemical mechanism of metals, in this case , zinc as a sacrificial anode, carbon steel as a cathode and humidity of the environment as an electrolyte. Both metals and the humidity of the environment interact in a very intimate way depending on their physicochemical properties to form a galvanic cell in which the free electrons of zinc or anodic zone circulate through the metal mass accumulating in the steel or cathodic zone. No less important is the additional mixture of other corrosion inhibitor components that are used as a whole and configure a very efficient system for the corrosion protection of flanged joints.
OBJETO DE LA INVENCIÓN OBJECT OF THE INVENTION
La transportación de líquidos o gases por medio de tuberías aéreas o ductos enterrados es mucho más económico y mucho más veloz que el transporte en tanques de almacenamiento. El hecho de ser sistemas no tripulados y totalmente automáticos, los hace operar con costos operativos más bajos y más seguros que el autotransporte, el ferrocarril o por embarcaciones marítimas y no son afectados mayormente por las condiciones climáticas.  The transportation of liquids or gases by means of overhead pipelines or buried pipelines is much cheaper and much faster than transportation in storage tanks. The fact that they are unmanned and fully automatic systems, makes them operate with lower and safer operating costs than motor transport, rail or maritime vessels and are not affected mainly by weather conditions.
Gracias al impulso que proporcionan las estaciones de bombeo, cuyo número y potencia están en función del volumen a transportar, de la viscosidad del producto, del diámetro de la tubería, de la resistencia mecánica y de los obstáculos geográficos a sortear, las tuberías transportan y distribuyen productos de manera más económica y en grandes cantidades por todo el mundo. Los energéticos más utilizados en el mundo son el petróleo crudo, el gas natural, el gas licuado de petróleo (gas LP) y la gasolina que se transportan y distribuyen en tuberías a través de ductos subterráneos, los cuales operan sin interrupción las 24 horas del día, los 365 días del año. Gracias a estos sistemas de transporte es posible tener acceso a estos energéticos de forma segura y económica. Dada la importancia de este medio de transporte la utilización de uniones bridadas en los circuitos de tuberías de acero al carbón representa una parte muy importante de este sistema de transporte. Thanks to the impulse provided by the pumping stations, whose number and power are a function of the volume to be transported, the viscosity of the product, the diameter of the pipe, the mechanical resistance and the geographical obstacles to be overcome, the pipes transport and distribute products more economically and in large quantities worldwide. The most used energy in the world are crude oil, natural gas, liquefied petroleum gas (LP gas) and gasoline that are transported and distributed in pipelines through underground pipelines, which operate without interruption 24 hours a day. day, 365 days a year. Thanks to these transport systems, it is possible to access these energy sources safely and economically. Given the importance of this means of transport, the use of flanged joints in carbon steel pipe circuits represents a very important part of this transport system.
Las uniones bridadas de acero al carbón son elementos mecánicos utilizados en los sistemas de transportación de líquidos o gases a través de circuitos de tuberías. La ventaja que ofrece la utilización de uniones bridadas radica en el hecho que por estar unidas por espárragos y tuercas de sujeción, permiten un rápido montaje y desmontaje de los elementos que componen los circuitos de tuberías con el objeto de realizar reparaciones o trabajos de mantenimiento. Existen varios tipos de uniones bridadas en función de su aplicación y generalmente se interconectan en los circuitos de tuberías ya sea roscadas o soldadas.  Flanged carbon steel joints are mechanical elements used in liquid or gas transportation systems through pipeline circuits. The advantage offered by the use of flanged joints lies in the fact that because they are joined by studs and clamping nuts, they allow a quick assembly and disassembly of the elements that make up the pipe circuits in order to carry out repairs or maintenance work. There are several types of flanged joints depending on their application and they are generally interconnected in either the threaded or welded pipe circuits.
Por las razones mencionadas anteriormente, nuestro objetivo es contribuir en la solución para resolver los problemas de corrosión en las uniones bridadas para reducir los costos de operación y mantenimiento y al mismo tiempo aumentar las condiciones de seguridad de los sistemas de transportación de tuberías aéreas.  For the reasons mentioned above, our goal is to contribute to the solution to solve corrosion problems in flanged joints to reduce operation and maintenance costs and at the same time increase the safety conditions of aerial pipeline transportation systems.
ANTECEDENTES BACKGROUND
Existen varios productos utilizados para la protección de las uniones bridadas en el mercado, entre algunas de ellas se encuentran: Los Cinturones o Bandas Protectoras de acero inoxidable, Kleerband flange Protectors que son cinturones o bandas de vinil inhibidoras de corrosión, Enviropeel System que es una envoltura termoplástica inhibidora de corrosión, Petrolatum Tapes que son tejidos impregnados con petróleo saturado y rellenos silíceos inertes, Cera microcristalina de petróleo, Radolid Protection Caps que son tapones de polietileno de alta densidad inhibidores de corrosión para la protección exterior de tuercas y espárragos de sujeción etc. There are several products used for the protection of flanged joints in the market, among some of them are: Stainless Steel Belts or Protective Bands, Kleerband flange Protectors that are belts or bands of corrosion-inhibiting vinyl, Enviropeel System which is a Thermoplastic corrosion inhibitor wrap, Petrolatum Tapes which are fabrics impregnated with saturated oil and inert siliceous fillers, Microcrystalline oil wax, Radolid Protection Caps that are high density polyethylene plugs corrosion inhibitors for the external protection of nuts and studs etc.
Todos los productos mencionados anteriormente protegen parcialmente algunos componentes de las uniones bridadas, pertenecen a diferentes fabricantes y se utilizan de manera independiente unos de otros, pero no existe en la actualidad un sistema o procedimiento que una las diferentes tecnologías existentes y/o nuevas tecnologías, que proporcione de manera integral una protección eficaz y duradera. Las uniones bridadas necesitan proteger contra la acción de la corrosión los siguientes componentes básicos: Las juntas o sellos de la unión bridada, sus caras internas, sus caras frontales, sus caras laterales, los espárragos y las tuercas de sujeción. All the products mentioned above partially protect some components of the flanged joints, belong to different manufacturers and are used independently of each other, but there is currently no system or procedure that links the different existing technologies and / or new technologies, that provides comprehensive and effective and lasting protection. Flanged joints need to protect against corrosion the following basic components: The gaskets or seals of the flanged joint, their inner faces, their front faces, their side faces, studs and clamping nuts.
BREVE DESCRIPCIÓN DE LA INVENCIÓN BRIEF DESCRIPTION OF THE INVENTION
Esta invención se refiere a un método para la protección anticorrosiva integral de las uniones bridadas que operen a temperaturas desde -50°C hasta +80°C de manera continua y que pueda garantizarse por lo menos 30 años sin problemas de corrosión. Este sistema encapsula totalmente las uniones bridadas ya que ninguna superficie interior o exterior queda sin protección. Para llevar a cabo este sistema de protección anticorrosiva, se necesitan aplicar cuatro materiales básicos:  This invention relates to a method for integral anticorrosive protection of flanged joints operating at temperatures from -50 ° C to + 80 ° C continuously and that can be guaranteed for at least 30 years without corrosion problems. This system fully encapsulates flanged joints since no interior or exterior surface is left unprotected. In order to carry out this corrosion protection system, four basic materials are needed:
1.- Una nueva tecnología que es una cinta de zinc anticorrosiva diseñada para proteger, tanques de almacenamiento, tuberías, y estructuras metálicas, de acero al carbón para instalaciones superficiales, la cual proponemos de manera ingeniosa para proteger las caras laterales y las caras frontales exteriores de las uniones bridadas. Esta cinta de zinc de elevada pureza (99.90% de zinc en peso) tiene un espesor uniforme de 0.080 mm. 1.- A new technology that is an anticorrosive zinc tape designed to protect, storage tanks, pipes, and metal structures, of carbon steel for surface installations, which we propose in an ingenious way to protect the lateral faces and the frontal faces outer flange joints. This high purity zinc tape (99.90% zinc by weight) has a uniform thickness of 0.080 mm.
Esta provista de un adhesivo electro conductivo de tipo acrílico de un espesor uniforme de 0.025 mm., que puede soportar temperaturas desde -50 °C hasta + 130 °C, y la temperatura para su aplicación es de +8°C a +40°C. La superficie metálica debe limpiarse previamente hasta obtener un grado de limpieza a metal blanco. Al adhesivo se le denomina Electroconductivo porque está provisto de pequeñas partículas de zinc de tamaño y forma homogénea, dispersas en forma uniforme sobre la base acrílica, estas partículas aseguran una conductividad eléctrica al adhesivo y una continuidad metálica entre el zinc y el acero, de tal manera que si en algún lugar se daña este recubrimiento, se filtrará en el lugar dañado un electrolito a través de la atmosfera, entonces, entre las superficies metálicas se verificara una pila galvánica, en la que el zinc asumirá la función de ánodo, disolviéndose y protegiendo la superficie metálica o cátodo de la pila (Fe). (Protección Galvánica por laminación en frío). It is provided with an electro-conductive acrylic adhesive of a uniform thickness of 0.025 mm., Which can withstand temperatures from -50 ° C to + 130 ° C, and the temperature for its application is from + 8 ° C to + 40 ° C. The metal surface must be cleaned before obtaining a white metal cleaning grade. The adhesive is called Electroconductive because it is provided with small zinc particles of homogeneous size and shape, dispersed uniformly over the acrylic base, these particles ensure an electrical conductivity to the adhesive and a metallic continuity between zinc and steel, such so that if this coating is damaged somewhere, an electrolyte will be filtered in the damaged place through the atmosphere, then, between the metallic surfaces a galvanic cell will be verified, in which the zinc will assume the function of anode, dissolving and protecting the metal surface or cathode of the battery (Fe). (Galvanic protection by cold rolling).
Para la protección de las caras laterales de las uniones bridadas, se cortan piezas especiales de zinc en forma de pequeños trapecios isósceles con un corte circular en el centro de cada pieza de acuerdo al tamaño de cada unión bridada. A cada pieza especial de zinc se le retira su papel desmoldante justo antes de ponerla en contacto con la superficie metálica y a través de los cortes circulares, se van colocando en todas y cada una de las tuercas de sujeción, hasta que todas las piezas en su conjunto conforman una protección absoluta en las dos caras laterales de la unión bridada. Cada una de estas piezas van ensambladas con un traslape mínimo de 1 cm entre cada una de ellas y son aseguradas a la superficie metálica mediante una espátula de madera.  For the protection of the lateral faces of the flanged joints, special pieces of zinc are cut in the form of small isosceles trapezoids with a circular cut in the center of each piece according to the size of each flanged joint. Each special piece of zinc is removed from its release paper just before putting it in contact with the metal surface and through the circular cuts, they are placed in each and every one of the fastening nuts, until all the pieces in their together they form an absolute protection on the two lateral faces of the flanged joint. Each of these pieces are assembled with a minimum overlap of 1 cm between each of them and are secured to the metal surface by a wooden spatula.
Para la protección de las caras frontales de las uniones bridadas, se cortan piezas rectangulares de zinc de acuerdo al ancho de cada unión bridada por 30 cms. de longitud, a cada pieza se le retira su papel desmoldante justo antes de ponerla en contacto con la superficie metálica y se aplica alineándola a las caras frontales de la unión bridada, asegurando su adherencia con una espátula de madera. Para las uniones bridadas verticales estas piezas rectangulares de zinc deben aplicarse siempre desde la parte inferior de la unión bridada hasta la parte superior con un traslape mínimo de 1.5 cm en cada lado, y deben aplicarse el número de piezas necesarias hasta cubrir la totalidad del perímetro de la unión bridada. Finalmente, con la ayuda de un cutter se hace un corte de aproximadamente 1.5 x 1.5 cms en la ranura de la unión bridada para llevar a cabo posteriormente, la protección interior de la misma. Las superficies metálicas deben limpiarse previamente hasta obtener un grado de limpieza a metal blanco. To protect the front faces of the flanged joints, rectangular pieces of zinc are cut according to the width of each flanged joint for 30 cm. In length, each piece of paper is removed from its release agent just before putting it in contact with the metal surface and applied by aligning it to the front faces of the flanged joint, ensuring its adhesion with a wooden spatula. For vertical flanged joints, these rectangular zinc pieces must always be applied from the bottom of the flanged joint to the top with a minimum overlap of 1.5 cm on each side, and the number of pieces necessary to cover the entire perimeter must be applied of the flanged joint. Finally, with the help of a cutter a cut of approximately 1.5 x 1.5 cm is made in the groove of the flanged joint to carry subsequently, the internal protection of it. The metallic surfaces must be cleaned before obtaining a degree of cleanliness to white metal.
2 - Un sello transparente contra intemperismo y la penetración de agentes externos en el adhesivo Electroconductivo de la cinta de zinc. 2 - A transparent seal against weathering and the penetration of external agents in the electro-conductive adhesive of the zinc tape.
Una vez que se hayan terminado de colocar todas las piezas de zinc, con la ayuda de una brocha de 2", se aplica el sello alrededor de cada círculo de las piezas especiales de zinc utilizadas para la protección de las caras laterales de la unión bridada. De esta manera evitamos la penetración de agentes extemos en la capa adhesiva de las piezas especiales de zinc. Con estas aplicaciones quedan totalmente protegidas todas las superficies exteriores de la unión bridada con la excepción de los espárragos y tuercas de sujeción. Once all the zinc pieces have been finished, with the help of a 2 "brush, the seal is applied around each circle of the special zinc pieces used to protect the side faces of the flanged joint In this way we avoid the penetration of external agents in the adhesive layer of the special zinc parts, with these applications all outer surfaces of the flanged joint are totally protected with the exception of studs and clamping nuts.
3.- Para la protección interior, o caras interiores o ranura interior de las uniones bridadas asi como de las tuercas y espárragos de sujeción contra la acción de la corrosión, utilizamos una cera microcristalina de petróleo que es un inhibidor de corrosión, antiflama, repelente al agua y tiene una gran adherencia a las superficies metálicas. Puede trabajar en forma continua a temperaturas desde -50°C hasta 80°C. Se suministra en bloques en estado sólido y para su aplicación se debe calentar a 86°C para manejarla y aplicarla en estado líquido. Después de aplicarla solidifica en forma casi instantánea al contacto con el metal. La superficie metálica debe limpiarse previamente hasta obtener un grado de limpieza a metal blanco.  3.- For the internal protection, or internal faces or internal groove of the flanged joints as well as the nuts and studs against the action of corrosion, we use a microcrystalline oil wax that is a corrosion inhibitor, anti-flame, repellent to water and has great adhesion to metal surfaces. It can work continuously at temperatures from -50 ° C to 80 ° C. It is supplied in blocks in solid state and for its application it must be heated to 86 ° C to handle it and apply it in liquid state. After applying it solidifies almost instantaneously upon contact with the metal. The metal surface must be cleaned before obtaining a white metal cleaning grade.
Para la aplicación de la cera microcristalina de petróleo en su estado liquido, se utiliza un generador eléctrico de aproximadamente 4 kw, una resistencia eléctrica circular de aproximadamente 3 kw con termostato integrado, y una cubeta metálica, en donde se vacían bloques de cera microcristalina previamente cortados de aproximadamente 10 x10 x 10 cms. para ser calentados. La resistencia circular se sujeta como un cinturón a la cubeta metálica y se conecta al generador eléctrico en donde después de un tiempo determinado, la cera microcristalina pasara del estado sólido al estado liquido a una temperatura de 86°C, entonces se procede al llenado de la ranura interior de cada unión bridada ya sea en posición vertical o en posición horizontal. For the application of the microcrystalline oil wax in its liquid state, an electric generator of approximately 4 kw is used, a circular electrical resistance of approximately 3 kw with integrated thermostat, and a metal bucket, where microcrystalline wax blocks are previously emptied cut of approximately 10 x10 x 10 cms. To be heated. The circular resistance is attached as a belt to the metal bucket and is connected to the electric generator where after a certain time, the microcrystalline wax will pass from the solid state to the liquid state to a temperature of 86 ° C, then the internal groove of each flanged joint is filled either vertically or horizontally.
Para realizar el llenado de la ranura de una brida vertical, se coloca un embudo metálico en la ranura hecha en la cinta de zinc en la parte superior de la unión bridada, con la ayuda de un tazón metálico de 1 It, Se toma la cera microcristalina liquida de la cubeta y se vacía con mucho cuidado a la unión bridada a través del embudo, esta operación se repite hasta llenar completamente la ranura, hecho esto, con un trapo humedecido con thinner, se limpia la parafina derramada y con la ayuda de unas tijeras, se corta una pieza especial de zinc de forma cuadrada de aproximadamente 5 x 5 cms, se retira su papel desmoldante justo antes de ponerla en contacto con la superficie metálica, y se coloca sobre la ranura existente, asegurando su adherencia con la ayuda de un martillo de goma.  To fill the groove of a vertical flange, a metal funnel is placed in the groove made in the zinc tape on the top of the flanged joint, with the help of a 1 It metal bowl, the wax is taken liquid microcrystalline from the cuvette and the flanged joint is carefully emptied through the funnel, this operation is repeated until the groove is completely filled, done with a cloth dampened with thinner, the spilled paraffin is cleaned and with the help of a pair of scissors, a special piece of zinc of square shape of approximately 5 x 5 cm is cut, its release paper is removed just before putting it in contact with the metal surface, and it is placed on the existing groove, ensuring its adhesion with the help of a rubber hammer.
Para realizar el llenado de una brida horizontal, se colocan 3 tiras de cinta adhesiva ahulada sobre la ranura de la unión bridada, separadas a una distancia de 120°, con la ayuda de un desarmador de cruz se hacen 3 perforaciones de 1/8" aproximadamente en los lugares en que se colocaron las cintas ahuladas, se coloca un popote flexible doblado a 90° en cada perforación, con la ayuda de una jeringa metálica, se absorbe la cera microcristalina liquida de la cubeta metálica y se inyecta con mucho cuidado a la unión bridada a través de la ranura existente, esta operación se repite hasta llenar completamente la ranura. La cera microcristalina deberá llenar parcialmente cada popote, los cuales indicaran que la ranura se lleno totalmente con la cera microcristalina. Se retiran los 3 popotes y las cintas ahuladas, con un trapo humedecido con thinner, se limpia la parafina derramada y con la ayuda de unas tijeras, se cortan 4 piezas cuadradas de zinc de aproximadamente 5 x 5 cms, se les retira el papel desmoldante justo antes de ponerlas en contacto con la superficie metálica, se tapa la ranura y las 3 perforaciones existentes y se asegura su adherencia con la ayuda de un martillo de goma. Con estas aplicaciones quedan totalmente protegidas todas las superficies interiores de la unión bridada con la excepción de los espárragos y tuercas de sujeción. To fill a horizontal flange, 3 strips of tapered tape are placed over the groove of the flanged joint, separated at a distance of 120 °, with the help of a cross screwdriver 3 holes of 1/8 "are made approximately in the places where the tapered ribbons were placed, a flexible straw folded at 90 ° is placed in each perforation, with the help of a metal syringe, the liquid microcrystalline wax is absorbed from the metal cuvette and carefully injected into the flanged joint through the existing groove, this operation is repeated until the groove is completely filled in. The microcrystalline wax must partially fill each straw, which will indicate that the groove is completely filled with the microcrystalline wax. spiked tapes, with a cloth moistened with thinner, the spilled paraffin is cleaned and with the help of scissors, 4 square pieces of zinc of approximately 5 x 5 cm are cut, Remove the release paper just before putting them in contact with the metal surface, cover the groove and the 3 existing perforations and ensure their adhesion with the help of a rubber hammer. With these applications all inner surfaces of the flanged joint are fully protected with the exception of studs and clamping nuts.
Para la protección exterior de los espárragos y tuercas de sujeción exteriores, se utiliza también la cera microcristalina de petróleo. Con la ayuda de una brocha de 2", se toma la cera microcristalina liquida de la cubeta y se aplica cuidadosamente en cada tuerca y esparrago de sujeción de la unión bridada hasta cubrirlos totalmente. La cera microcristalina solidificara instantáneamente al contacto con la superficie metálica.  The microcrystalline oil wax is also used for the external protection of external studs and clamping nuts. With the help of a 2 "brush, the liquid microcrystalline wax is taken from the cuvette and carefully applied to each nut and clamping stud of the flanged joint until it is completely covered. The microcrystalline wax will instantly solidify upon contact with the metal surface.
4.- Sellos de polietileno de alta densidad que cumplen con dos funciones principales, una como inhibidores de corrosión y la otra como protección mecánica y a la exposición de los rayos solares de la cera microcristalina de petróleo. 4.- High density polyethylene seals that fulfill two main functions, one as corrosion inhibitors and the other as mechanical protection and exposure to sunlight from microcrystalline oil wax.
Para realizar la colocación de los sellos de polietileno de alta densidad, se toma cada uno de ellos, se presentan en la tuerca de sujeción, teniendo cuidado de centrar las 6 venas existentes en cada sello de polietileno contra cada una de las caras planas del hexágono de la tuerca, luego, con un martillo de goma, se introducen a presión los sellos de polietileno en todas y cada una de las tuercas.  To place the high density polyethylene seals, each of them is taken, they are presented in the clamping nut, being careful to center the 6 existing veins in each polyethylene seal against each of the flat faces of the hexagon of the nut, then, with a rubber hammer, the polyethylene seals are introduced under pressure in each and every one of the nuts.
Este sistema en su conjunto, aparte de ser muy eficaz, es muy estético, las instalaciones se ven muy modernas y limpias ya que se eliminan todos los indicios de corrosión evitando que se manchen de oxido las instalaciones aledañas que ya no tienen que repintarse para mejorar su apariencia.  This system as a whole, apart from being very effective, is very aesthetic, the facilities look very modern and clean since all signs of corrosion are eliminated preventing rust from staining the surrounding facilities that no longer have to be repainted to improve your appearance.
BREVE DESCRIPCIÓN DE LAS FIGURAS. BRIEF DESCRIPTION OF THE FIGURES.
Fig. 1 Vista lateral con el detalle de los componentes de la cinta de zinc anticorrosiva. Fig. 2 Vistas frontal y lateral con el detalle de la protección de las caras laterales de las uniones bridadas con cinta de zinc.  Fig. 1 Side view with the detail of the components of the anticorrosive zinc tape. Fig. 2 Front and side views with the detail of the protection of the lateral faces of the flanged joints with zinc tape.
Fig. 3 Vista frontal con el detalle de la protección de las caras frontales de las uniones bridadas con cinta de zinc. Fig. 4 Vista lateral con el detalle de la protección del adhesivo electroconductivo de la cinta de zinc con un sello para intemperismo de secado rápido en los cortes circulares de las piezas especiales de zinc de cinta de zinc. Fig. 3 Front view with the detail of the protection of the front faces of the flanged joints with zinc tape. Fig. 4 Side view with the detail of the protection of the electroconductive adhesive of the zinc tape with a seal for fast drying weathering in the circular cuts of the special zinc pieces of zinc tape.
Fig. 5 Vista frontal del equipo con el detalle del calentamiento de la cera microcristalina de petróleo.  Fig. 5 Front view of the equipment with the detail of the heating of the microcrystalline oil wax.
Fig. 6 Vista frontal con el detalle del llenado con cera microcristalina de petróleo en una unión bridada vertical.  Fig. 6 Front view with the detail of filling with microcrystalline oil wax in a vertical flanged joint.
Fig. 7 Vista frontal con el detalle del llenado con cera microcristalina de petróleo en una unión bridada horizontal. Fig. 7 Front view with the detail of filling with microcrystalline oil wax in a horizontal flanged joint.
Fig. 8 Vista frontal con el detalle de la protección con cera microcristalina de petróleo de espárragos y tuercas de sujeción de las uniones bridadas. Fig. 8 Front view with the detail of the protection with microcrystalline wax from asparagus oil and fastening nuts of the flanged joints.
Fig. 9 Vista frontal de la configuración de los sellos de polietileno de alta densidad. Fig. 9 Front view of the configuration of high density polyethylene seals.
Fig. 10 Vista frontal de la colocación de sellos de polietileno en las uniones bridadas. DESCRIPCIÓN DETALLADA DE LA INVENCIÓN Fig. 10 Front view of the placement of polyethylene seals in flanged joints. DETAILED DESCRIPTION OF THE INVENTION
La invención esta soportada por una cinta de zinc anticorrosiva (1) de elevada pureza (99.90% de zinc en peso) con un espesor uniforme de 0.080 mm. Esta provista de un adhesivo electro conductivo (2), de tipo acrílico de un espesor uniforme de 0.025 mm., que puede soportar temperaturas desde -50 °C hasta + 130 °C, la temperatura para su aplicación es de +8°C a +40°C, y de un papel desmoldante de silicón (3) de espesor uniforme de .08 mm de espesor.  The invention is supported by a high purity anticorrosive zinc strip (1) (99.90% zinc by weight) with a uniform thickness of 0.080 mm. It is provided with an electro-conductive adhesive (2), of an acrylic type of a uniform thickness of 0.025 mm., Which can withstand temperatures from -50 ° C to + 130 ° C, the temperature for its application is + 8 ° C at + 40 ° C, and a silicone release paper (3) of uniform thickness of .08 mm thick.
Para la protección con cinta de zinc anticorrosiva de las caras laterales (4) de una unión bridada vertical (5) o una unión bridada horizontal (36), se deben realizar las siguientes operaciones: Con la ayuda de por lo menos una cizalla manual (6), cortar por lo menos un pieza especial de zinc (7) en forma de trapecio isósceles y con la ayuda de por lo menos unas tijeras (8) realizar en por lo menos un pieza especial de zinc (7) por lo menos un corte circular (9) centrado en por lo menos un pieza especial de zinc (7) y a la medida que corresponda al tamaño de por lo menos una unión bridada vertical (5) o por lo menos una unión bridada horizontal (36) y por lo menos una tuerca de sujeción (10), retirar gradualmente por lo menos un papel desmoldante (3) de por lo menos un pieza especial de zinc (7) justo antes de ponerla en contacto con la superficie metálica, aplicar por lo menos un pieza especial de zinc (7) sobre la superficie metálica a través de por lo menos un corte circular (9), centrándolo con el diámetro exterior de por lo menos una tuerca de sujeción (10), asegurando su adherencia con por lo menos una espátula de madera (1 1 ). En el caso de por lo menos una brida vertical (5), las piezas especiales de zinc (7) deben aplicarse siempre desde por lo menos una tuerca inferior (12) hasta por lo menos una tuerca superior (13) con por lo menos un traslape (14) mínimo de 1 cm en cada lado, y deben aplicarse tantos piezas especiales de zinc (7) como tuercas de sujeción (10) correspondan a por lo menos una unión bridada vertical (5) o por lo menos una unión bridada horizontal (36). For the protection with anticorrosive zinc tape of the lateral faces (4) of a vertical flanged joint (5) or a horizontal flanged joint (36), the following operations must be carried out: With the help of at least one manual shear ( 6), cut at least one special piece of zinc (7) in the form of an isosceles trapezoid and with the help of at least a pair of scissors (8) make at least one special piece of zinc (7) at least one circular cut (9) centered on at least one special piece of zinc (7) and the As it corresponds to the size of at least one vertical flanged joint (5) or at least one horizontal flanged joint (36) and at least one retaining nut (10), gradually remove at least one release paper (3) of at least one special piece of zinc (7) just before putting it in contact with the metal surface, apply at least one special piece of zinc (7) on the metal surface through at least one circular cut (9 ), centering it with the outer diameter of at least one clamping nut (10), ensuring its adhesion with at least one wooden spatula (1 1). In the case of at least one vertical flange (5), special zinc parts (7) must always be applied from at least one lower nut (12) to at least one upper nut (13) with at least one overlap (14) minimum of 1 cm on each side, and as many special pieces of zinc (7) as clamping nuts (10) must be applied correspond to at least one vertical flanged joint (5) or at least one horizontal flanged joint (36).
Para la protección con cinta de zinc anticorrosiva de las caras frontales (15), de una unión bridada vertical (5) o una unión bridada horizontal (36) se deben realizar las siguientes operaciones: Con la ayuda de por lo menos una cizalla manual (6), cortar por lo menos una pieza rectangular de zinc (16) del ancho total de por lo menos una cara frontal (15) de acuerdo a la medida que corresponda al tamaño de por lo menos una unión bridada vertical (5) o por lo menos una unión bridada horizontal (36) por 30 cms. de longitud, retirar gradualmente por lo menos un papel desmoldante (3) de por lo menos una pieza rectangular de zinc (16) justo antes de ponerla en contacto con la superficie metálica, aplicar por lo menos una pieza rectangular de zinc (16) sobre la superficie metálica, alineándola a por lo menos una cara frontal (15) de por lo menos una unión bridada vertical (5) o por lo menos una unión bridada horizontal (36), asegurando su adherencia con por lo menos una espátula de madera (1 1 ). En el caso de por lo menos una brida vertical (5) las piezas rectangulares de zinc (16) deben aplicarse siempre desde la parte inferior, hasta la parte superior, con por lo menos un traslape mínimo (17) de 1.5 cm en cada lado, y deben aplicarse el número de piezas rectangulares de zinc (16) necesarias para cubrir la totalidad de su perímetro. Finalmente, con la ayuda de por lo menos un cutter (18) hacer un corte de aproximado de 1.5 x 1.5 cms en la ranura (19) de la parte superior de por lo menos una unión bridada vertical (5) y en cualquier lado de la ranura (19) en por lo menos una unión bridada horizontal (36) para llevar a cabo posteriormente la protección anticorrosiva interior de la misma. For the protection with anticorrosive zinc tape of the front faces (15), of a vertical flanged joint (5) or a horizontal flanged joint (36) the following operations must be carried out: With the help of at least one manual shear ( 6), cut at least one rectangular piece of zinc (16) of the total width of at least one front face (15) according to the measure that corresponds to the size of at least one vertical flanged joint (5) or by At least one horizontal flanged joint (36) for 30 cm. in length, gradually remove at least one release paper (3) of at least one rectangular piece of zinc (16) just before putting it in contact with the metal surface, apply at least one rectangular piece of zinc (16) on the metal surface, aligning it to at least one front face (15) of at least one vertical flanged joint (5) or at least one horizontal flanged joint (36), ensuring its adhesion with at least one wooden spatula ( eleven ). In the case of at least one vertical flange (5) the rectangular zinc pieces (16) must always be applied from the bottom to the top, with at least a minimum overlap (17) of 1.5 cm in each side, and the number of rectangular pieces of zinc (16) necessary to cover the entire perimeter must be applied. Finally, with the help of at least one cutter (18) make a cut of approximately 1.5 x 1.5 cm in the groove (19) of the top of at least one vertical flanged joint (5) and on either side of the groove (19) in at least one horizontal flanged joint (36) to subsequently carry out the internal corrosion protection thereof.
La invención esta también soportada por un sello transparente (20) de secado rápido contra intemperismo.  The invention is also supported by a transparent seal (20) for rapid drying against weathering.
Para la protección del adhesivo Electroconductivo (2) contra intemperismo, se deben realizar las siguientes operaciones: con la ayuda de por lo menos una brocha de 2" (21) aplicar por lo menos un sello liquido contra intemperismo (20) de secado rápido en por lo menos un corte circular (9) de por lo menos un pieza especial de zinc (7) de por lo menos una cara lateral (4) de por lo menos una unión bridada vertical (5) o por lo menos una unión bridada horizontal (36).  For the protection of the Electroconductive adhesive (2) against weathering, the following operations must be carried out: with the help of at least a 2 "brush (21) apply at least one liquid seal against weathering (20) for quick drying in at least one circular cut (9) of at least one special piece of zinc (7) of at least one side face (4) of at least one vertical flanged joint (5) or at least one horizontal flanged joint (36).
La invención esta también soportada por una cera microcristalina de petróleo en estado sólido (22), que es un inhibidor de corrosión, de color café, con una gravedad especifica a 25°C de 0.88 a 0.94, con un punto de inflamación mínimo de 176°C, con un punto de fusión de 71 °C a 80°C, con una penetración de agua a 25°C de 26 a 50, y con una resistencia dieléctrica de 100 volts/mil., presenta una gran adherencia a las superficies metálicas en general y puede trabajar en forma continua a temperaturas desde -50°C hasta 80°C, se suministra en estado sólido y para su aplicación debe calentarse a 86°C para manejarla y aplicarla en estado líquido, al aplicarla solidifica en forma casi instantánea al contacto con las superficies metálicas. La superficie metálica debe limpiarse previamente hasta obtener un grado de limpieza a metal blanco. The invention is also supported by a solid-state microcrystalline petroleum wax (22), which is a brown-colored corrosion inhibitor with a specific gravity at 25 ° C of 0.88 to 0.94, with a minimum flash point of 176 ° C, with a melting point of 71 ° C to 80 ° C, with a penetration of water at 25 ° C from 26 to 50, and with a dielectric strength of 100 volts / mil., Presents a great adhesion to surfaces metal in general and can work continuously at temperatures from -50 ° C to 80 ° C, it is supplied in a solid state and for its application it must be heated to 86 ° C to handle it and apply it in a liquid state, when applying it solidifies almost Instant on contact with metal surfaces. The metal surface must be cleaned before obtaining a white metal cleaning grade.
Para la protección interior de una unión bridada vertical (5) o una unión bridada horizontal (36), con cera microcristalina de petróleo solida (22) se deben realizar las siguientes operaciones: Llenar con gasolina por lo menos un generador eléctrico (24) de aproximadamente 4 kw, colocar por lo menos una resistencia eléctrica circular (25) de aproximadamente 3 kw con por lo menos un termostato integrado (26) en por lo menos una cubeta metálica de 20 Its. (27), ajustar por lo menos un termostato (26) de por lo menos una resistencia circular (25) a una temperatura de 100°C. Vaciar en por lo menos una cubeta metálica (27) por lo menos una cera microcristalina solida (22) en bloques de 10 x10 x 10 cms aproximadamente hasta llenarla completamente, taparla con por lo menos una tapa metálica (28) , encender por lo menos un generador eléctrico (24), conectarlo a por lo menos una resistencia eléctrica circular (25) y después de un tiempo determinado, por lo menos una cera microcristalina solida (22) pasara al estado liquido a una temperatura de 86°C, entonces se procederá al llenado de por lo menos una ranura (19) de por lo menos una unión bridada vertical (5) o por lo menos una unión bridada horizontal (36). For the internal protection of a vertical flanged joint (5) or a horizontal flanged joint (36), with solid oil microcrystalline wax (22) the following operations must be carried out: Fill at least one electric generator (24) with gasoline approximately 4 kw, place at least one circular electrical resistance (25) of approximately 3 kw with at least one integrated thermostat (26) in at least one 20 Its metal cuvette. (27), set at least one thermostat (26) of at least one circular resistor (25) at a temperature of 100 ° C. Empty at least one metal cuvette (27) in at least one solid microcrystalline wax (22) into blocks of approximately 10 x 10 x 10 cm until completely filled, cover it with at least one metal lid (28), light at least an electric generator (24), connect it to at least one circular electric resistance (25) and after a certain time, at least one solid microcrystalline wax (22) will go into the liquid state at a temperature of 86 ° C, then it will proceed to the filling of at least one groove (19) of at least one vertical flanged joint (5) or at least one horizontal flanged joint (36).
Para realizar el llenado de una unión bridada vertical (5), se deberán realizar las siguientes operaciones: Colocar en por lo menos una ranura (19) en la parte superior de por lo menos una unión bridada vertical (5) por lo menos un embudo metálico (29), con la ayuda de por lo menos un tazón metálico de 1 It, (30), tomar por lo menos una cera microcristalina liquida (31 ) de por lo menos una cubeta metálica (27) y vaciarla con mucho cuidado a por lo menos una unión bridada vertical (5) a través de por lo menos un embudo metálico (29), repetir esta operación hasta llenar completamente por lo menos una ranura (19). Con por lo menos un trapo (32) humedecido con por lo menos un thinner (33), limpiar por lo menos una cera microcristalina liquida (31 ) derramada y con la ayuda de por lo menos unas tijeras (8), cortar por lo menos una pieza cuadrada de zinc (34) de aproximadamente 5 x 5 cms., retirar por lo menos un papel desmoldante (3) de la pieza cuadrada de zinc (34) justo antes de ponerla en contacto con la superficie metálica, tapar la ranura (19) y asegurar su adherencia con la ayuda de por lo menos un martillo de goma (35). Para realizar el llenado de una unión bridada horizontal (36), se deberán realizar las siguientes operaciones: Colocar por lo menos 3 tiras de cinta adhesiva ahulada (37) sobre por lo menos una ranura (19) de por lo menos una unión bridada horizontal (36), separadas a una distancia de 120°, con la ayuda de por lo menos un desarmador de cruz de aproximadamente 1/8" de diámetro (38) hacer 3 perforaciones en los lugares en que se colocaron las cintas ahuladas (37), colocar por lo menos un popote flexible (39) doblado a 90° en cada perforación, con la ayuda de por lo menos una jeringa metálica (45), succionar por lo menos una cera microcristalina liquida (31) de por lo menos una cubeta metálica (27) e inyectarla con mucho cuidado en por lo menos una la unión bridada horizontal (36) a través de por lo menos una ranura (19), repetir esta operación hasta llenarla completamente. Por lo menos una cera microcristalina liquida (31 ) deberá llenar parcialmente por lo menos 3 popotes flexibles (39), los cuales indicaran que por lo menos una ranura (19) quedo totalmente llena con por lo menos una cera microcristalina liquida (31 ), retirar por lo menos los 3 popotes flexibles (39) y por lo menos las 3 cintas ahuladas (37), con por lo menos un trapo (32) humedecido con por lo menos con un thinner (33), limpiar por lo menos una cera microcristalina liquida (31 ) derramada y con la ayuda de por lo menos unas tijeras (7), cortar por lo menos 4 piezas cuadradas de zinc (34) de aproximadamente 5 x 5 cms, retirar por lo menos un papel desmoldante (3) justo antes de ponerlos en contacto con la superficie metálica, tapar por lo menos una ranura (19) y por lo menos las 3 perforaciones existentes y asegurar su adherencia con la ayuda de por lo menos un martillo de goma (35). To complete the filling of a vertical flanged joint (5), the following operations must be carried out: Place at least one groove (19) in the upper part of at least one vertical flanged joint (5) at least one funnel metal (29), with the help of at least one 1 It metal bowl, (30), take at least one liquid microcrystalline wax (31) from at least one metal bucket (27) and empty it carefully at least one vertical flanged joint (5) through at least one metal funnel (29), repeat this operation until at least one groove (19) is completely filled. With at least one cloth (32) moistened with at least one thinner (33), clean at least one spilled liquid microcrystalline wax (31) and with the help of at least scissors (8), cut at least a square piece of zinc (34) of approximately 5 x 5 cm., remove at least one release paper (3) from the square piece of zinc (34) just before putting it in contact with the metal surface, cover the groove ( 19) and ensure its adhesion with the help of at least one rubber hammer (35). To fill a horizontal flanged joint (36), the following operations must be carried out: Place at least 3 strips of tapered tape (37) over at least one groove (19) of at least one horizontal flanged joint (36), separated at a distance of 120 °, with the help of at least one cross screwdriver approximately 1/8 "in diameter (38) make 3 perforations in the places where the tapered tapes were placed (37) , place at least one flexible straw (39) folded at 90 ° in each perforation, with the help of at least one metal syringe (45), suck at least one liquid microcrystalline wax (31) from at least one bucket metal (27) and carefully inject it into at least one horizontal flange joint (36) through at least one slot (19), repeat this operation until completely filled in. At least one liquid microcrystalline wax (31) must partially fill at least 3 straws f lexibles (39), which indicate that at least one slot (19) is completely filled with at least one liquid microcrystalline wax (31), remove at least 3 flexible straws (39) and at least 3 tapes hoisted (37), with at least one cloth (32) moistened with at least one thinner (33), clean at least one spilled liquid microcrystalline wax (31) and with the help of at least scissors (7 ), cut at least 4 square pieces of zinc (34) of approximately 5 x 5 cm, remove at least one release paper (3) just before putting them in contact with the metal surface, cover at least one slot (19 ) and at least the 3 existing perforations and ensure their adhesion with the help of at least one rubber hammer (35).
Para realizar la protección exterior los espárragos (41) y tuercas de sujeción (10) se deberán realizar las siguientes operaciones: Con la ayuda de una brocha de 2" (21 ), tomar por lo menos una cera microcristalina liquida (31 ) de por lo menos una cubeta metálica (27) y aplicarla cuidadosamente en por lo menos esparrago (41 ) y por lo menos una tuerca de sujeción (10) de por lo menos una unión bridada vertical (5), o por lo menos una unión bridada horizontal (36) hasta cubrirlos totalmente. La cera , To perform the external protection, the studs (41) and clamping nuts (10) must perform the following operations: With the help of a 2 "brush (21), take at least one liquid microcrystalline wax (31) in order to at least one metal bowl (27) and carefully apply it in at least asparagus (41) and at least one clamping nut (10) of at least one vertical flanged joint (5), or at least one horizontal flanged joint (36) until completely covered. ,
13  13
microcristalina liquida (31 ) solidificara instantáneamente al contacto con la superficie metálica. Con por lo menos un trapo (32) humedecido con por lo menos un thinner (33), limpiar por lo menos una cera microcristalina liquida (31) derramada. Liquid microcrystalline (31) will instantly solidify upon contact with the metal surface. With at least one cloth (32) moistened with at least one thinner (33), clean at least one spilled liquid microcrystalline wax (31).
La invención también esta soportada por sellos de polietileno de alta densidad (42), que cumplen con dos funciones básicas, una como inhibidores de corrosión y la otra como protección mecánica y a la exposición de los rayos solares de la cera microcristalina de petróleo (31). Su configuración le permite encapsular tanto el esparrago (41) como la tuerca de sujeción (10), y está diseñado para operar en forma continua a temperaturas de hasta 120°C, su diámetro mayor (43) está configurado con 6 venas triangulares (44), las cuales centran el sello (42) en las caras del hexágono de las tuercas (10) y tienen un ángulo de inclinación que les permite ajustarse al tamaño de cada tuerca (10) para que queden ensamblados a presión. The invention is also supported by high density polyethylene seals (42), which fulfill two basic functions, one as corrosion inhibitors and the other as mechanical protection and exposure to sunlight from microcrystalline oil wax (31) . Its configuration allows it to encapsulate both the stud (41) and the clamping nut (10), and is designed to operate continuously at temperatures up to 120 ° C, its largest diameter (43) is configured with 6 triangular veins (44 ), which center the seal (42) on the hexagon faces of the nuts (10) and have an angle of inclination that allows them to adjust to the size of each nut (10) so that they are assembled under pressure.
Para realizar el ensamble de los sellos de polietileno (42) se deberán realizar las siguientes operaciones: Tomar por lo menos un sello de polietileno (42), presentarlo en por lo menos una tuerca de sujeción (10), teniendo cuidado de centrar las 6 venas existentes (44) de por lo menos un sello de polietileno (42) con cada una de las caras planas del hexágono de por lo menos una tuerca de sujeción (10) y por lo menos un esparrago de sujeción (41), luego, con por lo menos un martillo de goma (35), introducir por presión los sellos de polietileno (42) en todas y cada una de las tuercas (10) y por lo menos un esparrago de sujeción (41) protegidos con por lo menos una cera microcristalina liquida (31).  To perform the assembly of polyethylene seals (42) the following operations must be carried out: Take at least one polyethylene seal (42), present it in at least one clamping nut (10), being careful to center the 6 existing veins (44) of at least one polyethylene seal (42) with each of the flat faces of the hexagon of at least one clamping nut (10) and at least one clamping stud (41), then, With at least one rubber hammer (35), push the polyethylene seals (42) into each and every one of the nuts (10) and at least one clamping stud (41) protected with at least one liquid microcrystalline wax (31).

Claims

REIVINDICACIONES
1. Un método para proteger por lo menos una unión bridada (45) contra la acción de la corrosión exterior en instalaciones superficiales y que sean capaces de operar en trabajo continuo con temperaturas de hasta 80°C, que comprende las etapas de aplicar por lo menos una cinta de zinc anticorrosiva (1 ,2,3), en por lo menos una cara lateral (4) con por lo menos una pieza especial de zinc (7) y en por lo menos una cara frontal (15) con una pieza rectangular de zinc (16) y en por lo menos una ranura (19) con por lo menos una pieza cuadrada de zinc (34) de por lo menos una unión bridada (45) y en aplicar por lo menos un sello (20) transparente contra intemperismo y la penetración de agentes externos en por lo menos un adhesivo electroconductivo (2) de por lo menos un corte circular (9) de por lo menos una pieza especial de zinc (7), y en aplicar por lo menos una cera microcristalina de petróleo (22) en por lo menos una ranura (19) y en por lo menos un esparrago de sujeción (41) y en por lo menos una tuerca de sujeción (10) de por lo menos una unión bridada (45), y en aplicar un sello de polietileno de alta densidad (42) en por lo menos un esparrago de sujeción (41) y en por lo menos una tuerca de sujeción (10) de por lo menos una unión bridada (45) Figs. (1 ,1A,2,4,6,7,8 y 10)  1. A method to protect at least one flanged joint (45) against the action of external corrosion in surface installations and that are capable of operating in continuous work with temperatures up to 80 ° C, comprising the steps of applying at least one anticorrosive zinc tape (1, 2,3), on at least one side face (4) with at least one special piece of zinc (7) and on at least one front face (15) with one piece rectangular zinc (16) and in at least one groove (19) with at least one square piece of zinc (34) of at least one flanged joint (45) and in applying at least one transparent seal (20) against weathering and the penetration of external agents in at least one electroconductive adhesive (2) of at least one circular cut (9) of at least one special piece of zinc (7), and in applying at least one microcrystalline wax of oil (22) in at least one groove (19) and in at least one clamping stud (41) and n at least one clamping nut (10) of at least one flanged joint (45), and in applying a high density polyethylene seal (42) in at least one clamping stud (41) and in at least less a clamping nut (10) of at least one flanged joint (45) Figs. (1, 1A, 2,4,6,7,8 and 10)
2. Un método tal como el definido en la reivindicación (1 ) para utilizar por lo menos una cinta de zinc anticorrosiva de elevada pureza (99.90% de zinc en peso) con un espesor uniforme de 0.080 mm. Esta provista de un adhesivo electro conductivo (2), de tipo acrílico de un espesor uniforme de 0.025 mm., que puede soportar temperaturas desde -50 °C hasta + 130 °C, la temperatura para su aplicación es de +8°C a +40°C, y de un papel desmoldante de silicón (3) de espesor uniforme de .08 mm de espesor para proteger por lo menos una cara lateral (4), y por lo menos una cara frontal (1) de por lo menos una unión bridada (45), Figs. (1 , 1A) 2. A method as defined in claim (1) for using at least one anticorrosive zinc tape of high purity (99.90% zinc by weight) with a uniform thickness of 0.080 mm. It is provided with an electro-conductive adhesive (2), of an acrylic type of a uniform thickness of 0.025 mm., Which can withstand temperatures from -50 ° C to + 130 ° C, the temperature for its application is + 8 ° C at + 40 ° C, and a silicone mold release paper (3) of uniform thickness of .08 mm thick to protect at least one side face (4), and at least one front face (1) of at least a flanged joint (45), Figs. (1, 1A)
3. Un método tal como el definido en la reivindicación (1 ) para utilizar por lo menos una cera microcristalina de petróleo (22, 31 ), que es un inhibidor de corrosión, de color café, con una gravedad especifica a 25°C de 0.88 a 0.94, con un punto de inflamación mínimo de 176°C, con un punto de fusión de 71 °C a 80°C, con una penetración de agua a 25°C de 26 a 50, y con una resistencia dieléctrica de 100 volts/mil., presenta una gran adherencia a las superficies metálicas en general y puede trabajar en forma continua a temperaturas desde -50°C hasta 80°C, y que sirve para proteger por lo menos una ranura (19), por lo menos un esparrago de sujeción (41) y por lo menos una tuerca de sujeción (10) de por lo menos una unión bridada (45), Figs. (1A,5,6,7,8,9, 10). 3. A method as defined in claim (1) for using at least one microcrystalline petroleum wax (22, 31), which is a corrosion inhibitor, brown in color, with a specific gravity at 25 ° C of 0.88 to 0.94, with a minimum flash point of 176 ° C, with a melting point of 71 ° C to 80 ° C, with a water penetration at 25 ° C of 26 to 50, and with a dielectric strength of 100 volts / mil., has a great adhesion to metal surfaces in general and can work continuously at temperatures from -50 ° C to 80 ° C, and that serves to protect at least one slot (19), at least a clamping stud (41) and at least one clamping nut (10) of at least one flanged joint (45), Figs. (1A, 5,6,7,8,9, 10).
4. Un método tal como el definido en la reivindicación (1 ) para utilizar por lo menos un sello de polietileno de alta densidad (42), que cumplen con dos funciones básicas, una como inhibidores de corrosión y la otra como protección mecánica y a la exposición de los rayos solares de la cera microcristalina de petróleo (22,31 ). Su configuración le permite encapsular tanto el esparrago (41) como la tuerca de sujeción (10) de por lo menos una unión bridada (45), y está diseñado para operar en forma continua a temperaturas de hasta 120°C, su diámetro mayor (43) está configurado con 6 venas triangulares (44), las cuales centran el sello (42) en las caras del hexágono de las tuercas (10) y tienen un ángulo de inclinación que les permite ajustarse al tamaño de cada tuerca (10) para que queden ensamblados a presión, Figs. (1A,9 y 10). 4. A method as defined in claim (1) for using at least one high density polyethylene seal (42), which fulfill two basic functions, one as corrosion inhibitors and the other as mechanical protection and exposure of the sun's rays of the microcrystalline oil wax (22,31). Its configuration allows it to encapsulate both the stud (41) and the clamping nut (10) of at least one flanged joint (45), and is designed to operate continuously at temperatures up to 120 ° C, its largest diameter ( 43) is configured with 6 triangular veins (44), which center the seal (42) on the hexagon faces of the nuts (10) and have an angle of inclination that allows them to adjust to the size of each nut (10) to that are assembled under pressure, Figs. (1A, 9 and 10).
5. Un método tal como el definido en la reivindicación (1 ) para utilizar por lo menos una cizalla manual (6), para cortar por lo menos un pieza especial de zinc (7) en forma de trapecio isósceles y por lo menos una pieza rectangular de cinta de zinc (16) para proteger por lo menos una cara lateral (4) y por lo menos una cara frontal (15) de por lo menos una unión bridada (45), figs. (1 ,1 A,2). 5. A method as defined in claim (1) for using at least one manual shear (6), for cutting at least one special piece of zinc (7) in the form of an isosceles trapezoid and at least one piece rectangular zinc tape (16) to protect at least one side face (4) and at least one front face (15) of at least one flanged joint (45), figs. (1, 1 A, 2).
6. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos unas tijeras (8) para hacer por lo menos un corte circular (9) en por lo menos una pieza especial de zinc (7) en forma de trapecio isósceles y para cortar por lo menos una pieza cuadrada de zinc (34), para proteger cuando menos una cara lateral (4) y una ranura (19) de por lo menos una unión bridada (45), figs. (1A,2,6,7). 6. A method as defined in claim (1) for using at least scissors (8) to make at least one circular cut (9) in at least one special piece of zinc (7) in the form of isosceles trapezoid and for cutting at least one square piece of zinc (34), to protect at least one side face (4) and a groove (19) of at least one flanged joint (45), figs. (1A, 2,6,7).
7. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos una espátula de madera (11) para asegurar la adherencia de por lo menos una pieza especial de zinc (7) en forma de trapecio isósceles, y de por lo menos una pieza rectangular zinc (16) de por lo menos una cara lateral (4) y por lo menos una cara frontal (15) de por lo menos una unión bridada (45) Figs. (1A,2,3). 7. A method as defined in claim (1) for using at least one wooden spatula (11) to ensure the adhesion of at least one special piece of zinc (7) in the form of isosceles trapezoid, and of at least one rectangular zinc piece (16) of at least one side face (4) and at least one front face (15) of at least one flanged joint (45) Figs. (1A, 2,3).
8. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos un cutter (18) para hacer un corte de aproximado de 1.5 x 1.5 cms de cinta de zinc8. A method as defined in claim (1) for using at least one cutter (18) to make a cut of approximately 1.5 x 1.5 cm of zinc tape
(1 ,2,3) en la ranura (19) de por lo menos una unión bridada (45) Fig. (1A,3). (1, 2,3) in the groove (19) of at least one flanged joint (45) Fig. (1A, 3).
9. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos una brocha de 2" (21 ) para aplicar por lo menos un sello liquido contra intemperismo (20) de secado rápido en por lo menos un corte circular (9) de por lo menos un pieza especial de zinc (7) de por lo menos una cara lateral (4) de por lo menos una unión bridada (45), Fig. (1A,8). 9. A method as defined in claim (1) for using at least a 2 "brush (21) to apply at least one liquid seal against weathering (20) of rapid drying in at least one circular cut (9) of at least one special piece of zinc (7) of at least one side face (4) of at least one flanged joint (45), Fig. (1A, 8).
10. Un método tal como el definido en la reivindicación (1 ) para utilizar por lo menos un generador eléctrico (24) para proporcionar energía eléctrica a por lo menos una resistencia eléctrica circular (25) para calentar por lo menos una cera microcristalina de petróleo (22). fig. (5). 10. A method as defined in claim (1) for using at least one electric generator (24) to provide electric power to at least one circular electric resistor (25) to heat at least one microcrystalline oil wax (22). fig. (5).
11. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos una resistencia eléctrica circular (25) con por lo menos un termostato integrado (26) para calentar por lo menos una cera microcristalina de petróleo (22), Fig.(5). 11. A method as defined in claim (1) for using at least one circular electrical resistor (25) with at least one integrated thermostat (26) for heating at least one microcrystalline oil wax (22), Fig. (5).
12. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos una cubeta metálica (27) con por lo menos una tapa metálica integrada (28) para calentar por lo menos una cera microcristalina solida (22), Figs. (5,6,7,8). 12. A method as defined in claim (1) for using at least one metal cuvette (27) with at least one integrated metal lid (28) for heating at least one solid microcrystalline wax (22), Figs . (5,6,7,8).
13. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos un embudo metálico (29) que sirve como conducto para llenar con por lo menos una cera microcristalina de petróleo liquida (31) para proteger por lo menos una ranura (19),Fig. (6). 13. A method as defined in claim (1) for using at least one metal funnel (29) that serves as a conduit for filling with at least one microcrystalline liquid oil wax (31) to protect at least one slot (19), Fig. (6).
14. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos un tazón metálico (30) a través de un embudo metálico (29) para vaciar por lo menos una cera microcristalina liquida (31), para proteger por lo menos una ranura (19). Figs. (6,7). 14. A method as defined in claim (1) for using at least one metal bowl (30) through a metal funnel (29) to empty at least one liquid microcrystalline wax (31), to protect by at least one slot (19). Figs. (6.7).
15. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos un trapo (32) humedecido con por lo menos un thinner (33) para limpiar por lo menos una cera microcristalina liquida (31) de por lo menos una unión bridada (45). Fig. (1A,6,7,8). 15. A method as defined in claim (1) for using at least one cloth (32) moistened with at least one thinner (33) to clean at least one liquid microcrystalline wax (31) of at least a flanged joint (45). Fig. (1A, 6,7,8).
16. Un método tal como el definido en la reivindicaciones (1 ,15) para utilizar cuando menos un thinner (33) para humedecer por lo menos un trapo (32) para limpiar por lo menos una cera microcristalina liquida (31) de por lo menos una unión bridada (45) Fig. (1A,6,7,8). 16. A method as defined in claims (1, 15) for using at least one thinner (33) to moisten at least one rag (32) for cleaning at least less a liquid microcrystalline wax (31) of at least one flanged joint (45) Fig. (1A, 6,7,8).
17. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos un martillo de goma (35) para la colocación de por lo menos un sello de polietileno de alta densidad (42) en por lo menos un esparrago (41) y en por lo menos una tuerca de sujeción (10) en por lo menos una unión bridada (45), Fig. (1A,10). 17. A method as defined in claim (1) for using at least one rubber hammer (35) for the placement of at least one high density polyethylene seal (42) on at least one stud ( 41) and in at least one clamping nut (10) in at least one flanged joint (45), Fig. (1A, 10).
18. Un método tal como el definido en la reivindicación (1) para utilizar cuando menos una cinta ahulada (37) sobre por lo menos una ranura (19) de por lo menos una unión bridada (45), Fig. (1A,7). 18. A method as defined in claim (1) for using at least one tapered tape (37) over at least one groove (19) of at least one flanged joint (45), Fig. (1A, 7 ).
19. Un método tal como el definido en la reivindicación (1) para utilizar por lo menos un desarmador de cruz (38) para hacer una perforación de 1/8" en el lugar en que se coloco por lo menos una cinta ahulada (37) de por lo menos una ranura (19) de por lo menos una unión bridada (45), Fig. (1A,7). 19. A method as defined in claim (1) for using at least one cross screwdriver (38) to make a 1/8 "hole in the place where at least one tapered tape (37 ) of at least one groove (19) of at least one flanged joint (45), Fig. (1A, 7).
20. Un método tal como el definido en la reivindicación (1 ) para utilizar cuando menos un popote flexible (39) doblado a 90° en cada perforación en el lugar en que se coloco por lo menos una cinta ahulada (37) de por lo menos una ranura (19) de por lo menos una unión bridada (45), Fig. (1A,7). 20. A method as defined in claim (1) for using at least one flexible straw (39) bent at 90 ° in each perforation at the place where at least one tapered tape (37) is placed at least less a groove (19) of at least one flanged joint (45), Fig. (1A, 7).
21. Un método tal como el definido en la reivindicación (1 ) para utilizar por lo menos una jeringa metálica (40) para inyectar por lo menos una cera microcristalina liquida (31) en por lo menos una unión bridada (45), Fig. (1A,7).  21. A method as defined in claim (1) for using at least one metal syringe (40) to inject at least one liquid microcrystalline wax (31) into at least one flanged joint (45), Fig. (1A, 7).
PCT/MX2014/000191 2014-01-20 2014-12-03 Method for the anti-corrosion protection of flanged couplings WO2015108405A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296821A1 (en) * 1987-06-24 1988-12-28 Leck Haslam Limited Anti-corrosion device for pipe flanges
US6142579A (en) * 1998-05-27 2000-11-07 Radolid Thiel Gmbh Corrosion protection cap for polygonal nuts
US20110260443A1 (en) * 2007-04-26 2011-10-27 Petroleo Brasileiro S.A. Corrosion management systems for controlling, eliminating and/or managing corrosion
US8562771B2 (en) * 2010-07-20 2013-10-22 Tenaris Connections Limited Joints having improved sealability, lubrication and corrosion resistance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296821A1 (en) * 1987-06-24 1988-12-28 Leck Haslam Limited Anti-corrosion device for pipe flanges
US6142579A (en) * 1998-05-27 2000-11-07 Radolid Thiel Gmbh Corrosion protection cap for polygonal nuts
US20110260443A1 (en) * 2007-04-26 2011-10-27 Petroleo Brasileiro S.A. Corrosion management systems for controlling, eliminating and/or managing corrosion
US8562771B2 (en) * 2010-07-20 2013-10-22 Tenaris Connections Limited Joints having improved sealability, lubrication and corrosion resistance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
THE AUSTRALIAN PIPELINER, October 2005 (2005-10-01), pages 80 *

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